Can exciton BEC be observed via multi-level pl kinetics?

Boris Laikhtman*, Leonid D. Shvartsman

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

It is shown that the transition process to BEC phase of excitons can be manifested as non-monotonic kinetics of photoluminescence decay. This decay looks as a series of subsequent peaks resulting from superradiance phenomenon. We show that decay of PL of certain InAs-GaSb coupled quantum wells having, for instance, in average 5 ground state excitons per island may demonstrate up to 5 consecutive maximums followed by exponential decay. This dependence may be considered as a manifestation of transition to the Bose condensate phase. The radiation kinetics of such a system is a generalization of the known two-level Dicke superradiance to an ensemble of multilevel systems.

Original languageAmerican English
Title of host publicationPhysics of Semiconductors - 28th International Conference on the Physics of Semiconductors, ICPS 2006, Part A and B
Pages413-414
Number of pages2
DOIs
StatePublished - 2007
Event28th International Conference on the Physics of Semiconductors, ICPS 2006 - Vienna, Austria
Duration: 24 Jul 200628 Jul 2006

Publication series

NameAIP Conference Proceedings
Volume893
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference28th International Conference on the Physics of Semiconductors, ICPS 2006
Country/TerritoryAustria
CityVienna
Period24/07/0628/07/06

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